Sensor Circuit Design: Bridge Circuits (by Walt Kester)

Inside the technical note you can find explanation regarding excitation, load cells, circuits, instrumentation amplifier, wiring resistance, accuracy, bridge, strain gage, resistance, gain error, bridge excitation, and offset. Many discussion about voltage, measurement accuracy, error, excitation voltage, output voltage, varying bridge, impedance, gage resistance, lead resistance, wire sensing, configuration, and elements are presented inside the technical note.

This technical note gives the reader information related to kelvin sensing, method, temperature, linearity error, wiring, bridge output, current, nonlinearity, wire connection, amplifier, bridge circuits, and measurement. The following are selected from this technical note:

This section discusses the fundamental concepts of bridge circuits, and is followed by a section on precision op amps (Section 3). Section 4 focuses on the detailed application circuits relating to strain gage-based sensors. Sections 2 and 4 can be read sequentially if the reader already understands the design issues relating to op amps which are covered in Section 3.

In addition, this technical note explains information such as constant current excitation, fullscale bridge, output, offset error, element, linearity, circuit, bias current, point linearity, thermocouple voltage, current excitation, and constant current.

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